Tire-stem pressure gauge



Oct. 23, 1923. 1,471,324

A. BADOWSKI TIRE STEM PRESSURE GAUGE Filed Oct. 19 1921 Patented ct. 23, i923.

f Linen VALVE CORPORATION 'or Auenlager CHARLESTON, wEsT VIRGINIA, A oon- PonATIoN or WEST vrnernra A TIaE-sTnMrREssURE GAUGE.

Application mea oetber 1s, 19271. serial No. 508,728.

To all whom. t 'mafz/ concer/n.'

Be it known that I, ALFRED Banows'lxi, a citizen oit the United States, residing at Charleston, in the county ofKanawha and State ot l/lfest Virginia, have invented new and useful Improvements in` Tire-Stem Pressure Gauges, oi which theollowing is a specification.

Tire stem pressure gauges have been formed with a sleeve lin which there is a movable plunger, the movable plunger having an inflation passage through it and vhaving its communication withthe interior of the sleeve maintained by a rubber or extensible tube. A spring is also usually Yprovided for sustaining lthe pressure, the

' plunger indicating by its movement the inv A.

construction-shown'in Fig. 1.' In this conlation pressure. The present invention is directed to the manner of securing the tube to the plunger and also the sprin rIhe invention is illustrated in the accompanying drawings as follows Y Fig. 1 shows a section through a felloe with a pressure gauge in place thereon.

gauge.

Fig. 3 a section of the upper part of the gauge indicating a modification from that shown in Fig. 2 and which construction is preferred.

l marks the felice, 2 the rim, 3 the tire, 4 the tube, and 5 an opening through the Vtelloe for the tire stem.

The stem is in the form of a sleeve 6 having a head 7 and the tube is clamped between the washer 8, plate 9and the head 7, pressure being exerted by the clamping nut 10. The sleeve has van opening 11 extending through it and a movable plunger l2 is slidingly mounted in this opening, the plunger carrying the usual iniiation valve 13. 14 which indicates as the plunger moves the pressure inducing the movement. Anhanchor plug 15 is screwed into the lower end oi" the opening 11 and is provided with anv opening 16 extending through it. A rubber tube 17 is secured to a nipple 18 at the upper end of the plug by a binding material 18a and a spring 19 is secured on the threads 20 also arranged on the anchor plug.

The upper end of the tube is carried in a ring 21 as shown in Fig. 2. A gasket 22 is arranged between the vring and the end Fig. 2 a central section through a pressure The plunger is provided with a scalev ofthe plunger. A screw 23 has its head 24 arranged within vthe tube and `clamps the.

end of the tube against the wall of the ring, the screw. extending into a screw-threaded opening 25 in the plunger, thus securing the tube to the plunger and clamping the gasket 22. The spring V19 is secured on screw threads arranged on the periphery Qof the ring 21. i i Y In the construction shown in Fig. 3 the rubberftube extendsfthrough a ring 26, the end 27 or" the tube 'forming in itself a gasket on the end of the plunger.v A screw 28 has a head 29 arranged in the tube 517 and is of sufficient size to clamp the'tube against the walls of the ring 26, the' screw extending into the screw-threaded opening 25 as in the struction it will be seen that the screw pressure acting on the tube not only secures the `tube to the plunger but seals the connection between the plunger and the tube so as to prevent leakage.

What I claim as new is l. In a tire stem pressure gauge, the combination with a sleeve; a plunger vin the sleeve indicating by its movement the pres sure in the sleeve, said plunger being'provided with an inflation passage to which leads a Vscrew-threaded opening; va rubber tube forming an extensible means of communication from the plunger to a 'stationary part of the sleeve; of a ring around the end or the tube detached Vbut adjacent to the plunger; and a screw having its head within the tube clamping the rubber within the l ring'and extending into the screw-threaded' opening in the plunger to secure the tube to the plunger. Y Y

2. In a tire stem pressure gauge, the comsure in the sleeve, said p'lungerbeing pro-V videdv with an inflation passage to which ers leads a screw-threaded opening; a rubber tube forming an extensible means of communication from the plunger to a stationary part of the sleeve; of a ring around the end of the tube detached butadjacent to the plunger; and a screw having Aits head within the Atube clamping the rubber within the ring and extending into the screw-threaded, opening in the plunger to secure the tubeto the plungerVthe end 'of the tube extending through the ring and forming a seal at the end of the plunger.

3. ln a tire stein pressure gauge, the combination with a sleeve; a plunger in the sleeve indicating by its movement the pressure in the sleeve; said plunger being provided with an inflation passage to which leads a screw-threaded opening; a rubber tube forming an extensible means ot communicationk troni the plunger to a stationary part of the sleeve; or a ring around.the end ot the tube detached trom but adjacent to the plunger; a screw having its head Within thel tube clamping the rubber vithin the ring and extending into the screw-threaded opening in the plunger to secure` the tube to the plunger; and a spring` secured to the ring resisting the movement of the plunger.

4. ln a tire stein pressure gauge, thc combination with a sleeve; a plunger in the sleeve indicating by its movement the pres-- sure in the sleeve; said plunger being provided With an inflation passage to which leads a screw-threaded opening; a rubber tube forming an extensible means of communication from the plunger to a stationary part of the sleeve; of a ring around the end of the tube detached from but adjacent to the plunger; a screw having its head Within the tube clamping the rubber Within the ring and extending into; the screw-threaded opening in the plunger to secure the tube to the plunger; and a spring secured .to the Outer periphery or the ring resisting the movement of the plunger.

5. ln a tire stern pressure gauge, the combination With a sleeve; a plunger in the sleeve indicating by its movement the pressure in the sleeve, said plunger being provided With an inflation passage to which leads a screW-threaded opening; a rubber tube forming an extensible means or coin- `rnunication from the plunger to a stationary part of the sleeve; ot a ring around the end of the tube detached from but adjacent to lthe plunger; a screw having its head within the tube clamping the rubber within the ring and extending into the screw-threaded opening inthe plunger to secure the tube to the plunger, the end et the tube extending threugh the ring and forming a seal at 'the end ofthe plunger; and a screw screwed on to the outer periphery of the ring and resisting the movement of the plunger. Y

ln testimony. whereof ll have hereunto set my hand.

' ALFRED BADOVVSKL 

